^^ Uhh...no.
McCoy seems to be giving a little nod of affirmation to Spock's remark. Just as we know the first world war as World War I in it's time and for sometime after it was known as The Great War. And Spock appears to agree rather than appear in anyway miffed that he's been corrected.
As a Vulcan he shouldn't feel miffed about being corrected. To each his own on this interpretation. By seeing it the way I do, and there is no crime in it, it leave continuity intact.
It works for me.
